P2E45

Hybrid/EV Electronics Coolant Pump B Enable Circuit

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Warning message on dashboard
Overheating of electronic components
Reduced performance of the hybrid system
Automatic power limitation
Noisy cooling pump

Causes

Open or short circuit in control circuit
Pump solenoid valve malfunction
Problems with the control relay
Mechanical failure of the cooling pump
Low coolant level

How to Fix

Check the level and condition of the coolant
Diagnose the pump control circuit
Check pump functionality
Replace faulty circuit components
Reset error code after repair

Related codes

P2E40 P2E44 P2E46